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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=elephly.net header.s=zoho header.b=S6obDDkV; arc=reject ("signature check failed: fail, {[1] = sig:zohomail.com:reject}"); dmarc=none; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: 0.95 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=elephly.net header.s=zoho header.b=S6obDDkV; arc=reject ("signature check failed: fail, {[1] = sig:zohomail.com:reject}"); dmarc=none; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: 92B40255D6 X-Spam-Score: 0.95 X-Migadu-Scanner: scn0.migadu.com X-TUID: NICWT9SuZmOQ Hi there After removing `gdm login` using a transformer and forget to modify/amend it into build-custom-services i break my system : (define-public %dm/system-services (append (build-custom-services identity) (modify-services %desktop-services (delete gdm-service-type)))) My gnome crash, and when i even when i try to roll-back, it was impossible to login, my screen freeze at login/password, just before gnome start. Error in message : ul 4 17:44:11 localhost elogind[427]: New session c1 of user gdm. Jul 4 17:44:11 localhost gdm-session-worker: GLib-GObject: g_object_unref: assertion 'G_IS_OBJECT (object)' failed Jul 4 17:44:11 localhost gdm: Gdm: GdmDisplay: Session never registered, failing Jul 4 17:44:11 localhost elogind[427]: Removed session c1. Jul 4 17:44:11 localhost gdm: Gdm: Child process -552 was already dead. Jul 4 17:44:11 localhost gdm: Gdm: GdmDisplay: Session never registered, failing Jul 4 17:44:11 localhost gdm: Gdm: Child process -552 was already dead. Removing /var/lib/gdm and mkdir gdm, rebooting with rollback solving the problem. during a guix system reconfigure